Lamp-burner.



No. 735,236. PATENTED AUG. 4, 1903.

13. 1" FOWLER. LAMP BURNER.

APPLICATION FILED MAY 31. 1902.

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No..735,236. Patented August 4, 1902.

UNITED STATES PATENT OFFICE.

BENJAMIN F. FOWLER, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR OF THREE-EIGHTHSTO EDWARD W. BINGENIIEIMER, OF MINNEAPOLIS, MINNESOTA, AND JAMESASPDEN, OF EXOELSIOR, MINNESOTA.

SPECIFICATION forming part of Letters Patent N 0. 735,236, dated August4, 1903. Application filed May 31,1902. Serial No. 109,735. (No model.)

To aZZ whom it may concern: understood, it maybe of more, if desired. Beit known that I, BENJAMIN F; FOWLER, Its upper portion is of the usualform, being a citizen of the United States, residing at provided with aflame opening 18, located Minneapolis, in the county of Hennepin anddirectly above the wick tube. Upon the State of Minnesota, have inventeda new and lower portion of the cone to a slight distance usefulLamp-Burner, of which the following above its lower edge is arranged anannular is a specification. horizontal rib 19, this rib being providedwith Thisinvention relates to lamp-burners; and outstandingsubstantially pyramidal projecone of the objects thereof is to provideanovel tions 20. The lower end of the cone fits within 10 constructionof a transparent cone which will the collar 14, the rib 19 constitutinga stop permit the escape of all the rays of light from against which theupper edge of said collar the flame and will diffuse them evenly,espeabuts. cially when the light is turnedlow. Mounted upon thewick-tube is arranged Another object is to provide a novel device adevice which may be termed a flame- I 5 by means of which the flame maybe easily trimmer, this device being in theform of a trimmed, saiddevice also servingto protect horizontally-disposed spreader-plate orplatthe cone against the flame, and thus avoiding form 21, having acentral opening 22, through its being broken. I which the wick-tubepasses, this opening be- The preferred form of construction is fully inglonger than the width of the tube, so that 20 illustratedin theaccompanying drawings, the trimmer may be moved longitudinally. thoughit will be understood that various The plate is provided on oppositesides of changes may be made from this construction. the opening withupstanding flanges 23,which In said drawings, Figure 1 is a perspectivebear'against the opposite sides of the wickview of a lampburnerconstructed in accordtube and form extended bearing-surfaces to 25 ancewith the present invention. Fig. 2 is a 'properlysupport the trimmer. Ivertical sectional view through the .same. The burner is employed in thecustomary Fig. 3 is a similar view taken at right angles manner 5 but itwill be seen that whenthe to Fig. 2. Fig. 1 is a horizontal sectional.light is turned low the rays therefrom will view. Fig. 5isadetailvertical sectionalview readily pass through the cone, and especially 3:throughaslightly-modified form of constructhrough that portion thereofwhich carries tion. Fig. 6 is a horizontal sectional View the rib. Asaresult the light passing through through the same.' the rib will bediffused by the projections.

Similar numerals of reference designate cor- The burner is thereforeespeciallyu'sefulon respondingpartsin all thefigures of thedrawnightlamps, as it may be turned down so 5 ings. p j that no directrays of light will emanate from In the embodiment of the invention, as,the lamp,though the roomwill be sufficiently shown, the body isconstructed of substan illuminated. When the lightis turned up, tiallythe usual shape, having a threaded boss the direct rays can of coursepass through 10, outstanding flange 11, the perforated platthe clear andunbroken upper portion of the 0 form 12, and the upright wick-tube 13.To cone, so that no light is lost. Should the 0 this body is connectedametallic collar 14, wick be trimmed unevenly and; the flam e which, asshown, is hinged at 15, its opposite flare at eithercorner, by" movingthe trim side being provided with a suitable latch 16, ming-platelongitudinally in one direction or though other means of connection maybe the other, or, in other words, transverselyof 45 employed, ifdesired. The upper edge of this the wick-tube, the draft to the higherportion 5 collar is preferably flush with the upper end of the flame maybe out ofi, and thus the flame of the wick-tube, and said collarsupports the may be trimmed. In this way the danger of cone 17. Thiscone is of some transparent breaking the cone by the flame striking itis material, preferably of glass, shown as being avoided. This trimmingoperation can be 50 formed of one piece, though, as will be readilyreadily accomplished, for by throwing back 10 the cap access is obtainedto the spreaderplate.

In Figs. 5 and 6 a slightly-modified form of construction is shown. Theconstruction as above described is still employed; but the metalliccollar 14 is provided with a plurality of perforations which may be inthe form of circular openings 24, as shown, or they can be of any shapedesired. A transparent shield 25 is located within the collar and coversthe opening, said shield being preferably formed of mica. Thisarrangement permits the greater radiation of light, and at the same timethe shield prevents the ingress of lateral drafts of air.

From the foregoing it is thought that the construction, operation, andmany advantages of the herein-described invention will be apparent tothose skilled in the art without further description, and it will beunderstood that various changes in the size, shape, proportion, andminor details of construction may be resorted to without departing fromthe spirit or sacrificing any of the advantages of the invention.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a lamp-burner of the class described, a cone constructed oftransparent material and having on its outer face an annular series ofoutstanding and substantially pyramidalshaped projections arrangedcontiguous to its lower end, the portion of the wall above the seriesbeing smooth to permit the direct passage of rays of light.

In a lamp-burner of the class described, a cone constructed oftransparent material and having an annular rib arranged above its loweredge, a metallic collar fitted upon the lower end of the cone, and anannular series of outwardly-projecting angular and being substantiallyflush with the upper end of the wick-tube.

4. In aburner, a wick-tube, and a spreaderplatform mounted upon the tubeand surrounding the same, said spreader-platform being movabletransversely of the tube.

5. In'ja burner, a wick-tube and a substantially horizontalspreader-platform surrounding the tube and movable transversely thereof,said platform having upright flanges engaging opposite sides of thetube.

6. In a burner, a body having an upstanding wick-tube, a metallic collarsecured to the body about the wick-tube, a glass cone fitted within theupper edge of the collar and having a rib on its outer face, said ribbeing provided with an annular series of pyramidalshaped projections, ahorizontally-disposed spreader-plate frictionally supported upon theupper end of the wick-tube, said plate being longitudinally adjustableupon the tube.

7. In a lamp burner, a body having a wicktube, an outstanding flange anda threaded tending above the wick-tube, said collar hav- BENJAMIN F.FOWLER.

Witnesses:

H. J. GRoss, FRED J. GILMAN.

